Electric Field Sensing with Piezoelectric Plastics
The purpose of this thesis is to present a viable alternative to all dielectric electric field sensing using piezoelectric plastics. A quantitative evaluation of electric field sensing schemes is presented to assist one in selecting the best piezoelectric plastic. One of the materials that will be selected for use in the thesis will be a polyvinylfluoride (PVF) homopolymer, polyvinylidene fluoride (PVF2). A second material of interest will be a polyvinylfluoride copolymer, polychlorotrifluoroethylene (PCTFE). The evaluation scheme will provide a piezoelectric and composite model, and a generic system model. Experimental research that was done as a comparison to theoretical work will be provided. Several specific performance measures which can help evaluate the performance of a piezoelectric plastic will be provided. Several, when utilized as an electric field sensor, are presented in the thesis. They include the piezoelectric strain constants (d31,d32,d33) and the piezoelectric stress constants (g3l,g32,g33) for crystalline structures. The compression and tensile strengths, the permitivity and relative perrnitivities, and index of refraction. A piezoelectric and composite model and a generic system model are presented and their functional blocks analyzed. The versatility of the generic system model allows it to be used for this discussion of electric field sensing with various piezoelectric plastics. Several key parameters of the generic model are defined and their use in evaluating the performance of piezoelectric plastics as electric field sensors exhibited.
Walters, Roy A.
Master of Science (M.S.)
College of Engineering
Length of Campus-only Access
Masters Thesis (Open Access)
Dissertations, Academic -- Engineering; Engineering -- Dissertations, Academic
Horrigan, David Edward, "Electric Field Sensing with Piezoelectric Plastics" (1989). Retrospective Theses and Dissertations. 4155.